Examine source code of Dark Gray Wood

{
  "theme": {
    "images": {
      "theme_frame": "HDR-055.jpg"
    },
    "colors": {
      "frame": "#232633",
      "tab_background_text": "#8ef5fa"
    }
  },
  "version": "2.0",
  "name": "Dark Gray Wood",
  "manifest_version": 2,
  "description": "Dark gray grey wood grain"
}